SimpleConfig.cs :  » Business-Application » Tea-Timer-for-Windows » SimpleConfigLib » C# / CSharp Open Source

using System;
using System.Xml;
using System.IO;

namespace SimpleConfigLib{
  /// <summary>
  /// Summary description for SimpleConfig.
  /// </summary>
  public class SimpleConfig
  {
    private string _sConfig;
    private XmlDocument _oDoc=new XmlDocument();
    private readonly string ROOT="config";
    private readonly string LISTPOSTFIX="_";

    public SimpleConfig(string sPath, string sFile)
    {
      _sConfig=Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)+"\\"+sPath;
      if(!Directory.Exists(_sConfig))
        Directory.CreateDirectory(_sConfig);
      _sConfig+="\\"+sFile;
      try 
      {
        _oDoc.Load(_sConfig);
      }
      catch(FileNotFoundException e) 
      {
        XmlTextWriter oWriter=new XmlTextWriter(_sConfig,null);
        oWriter.WriteStartDocument();
        oWriter.WriteStartElement(ROOT);
        oWriter.WriteEndElement();
        oWriter.WriteEndDocument();
        oWriter.Flush();
        oWriter.Close();
        _oDoc.Load(_sConfig);
      }
    }

    public string getValue(string sName, string sKey, string sParam, string sDefault) 
    {
      XmlNode oNode=getXmlNode(sName,sKey);
      //check for node
      if(oNode==null) 
      {
        return sDefault;
      }
      //get value
      oNode=getXmlNode(oNode,sParam);
      if(oNode==null) 
      {
        return sDefault;
      }
      //return value
      return oNode.Attributes["key"].Value;
    }
    public string[] getValues(string sName, string sKey, string sParam, string[] sDefaults) 
    {
      XmlNode oNode=getXmlNode(sName,sKey);
      //check for node
      if(oNode==null) 
      {
        return sDefaults;
      }
      //get values
      oNode=getXmlNode(oNode,sParam);
      if(oNode==null) 
      {
        return sDefaults;
      }
      //return values
      XmlNodeList oNodes=getXmlNodeList(oNode,sParam+LISTPOSTFIX);
      string[] sVals=new string[oNodes.Count];
      int i=0;
      foreach(XmlNode oNode_ in oNodes) 
      {
        sVals[i++]=oNode_.Attributes["key"].Value;
      }
      return sVals;
    }

    public void setValue(string sName, string sKey, string sParam, string sVal) 
    {
      //check if node exists
      XmlNode oNode=getXmlNode(sName,sKey);
      if(oNode==null) 
      {
        oNode=createXmlNode(sName,sKey);
      }
      setXmlParam(oNode, sParam, sVal);
    }
    public void setValues(string sName, string sKey, string sParam, string[] sVals) 
    {
      //check if node exists
      XmlNode oNode=getXmlNode(sName,sKey);
      if(oNode==null) 
      {
        oNode=createXmlNode(sName,sKey);
      }
      setXmlParams(oNode, sParam, sVals);
    }
    //create
    private XmlNode createXmlNode(string sName, string sKey) 
    {
      return createXmlNode(_oDoc.SelectSingleNode("//"+ROOT),sName,sKey);
    }
    private XmlNode createXmlNode(XmlNode oNode, string sName, string sKey) 
    {
      XmlElement oNew=_oDoc.CreateElement(sName);
      oNew.SetAttribute("key",sKey);
      oNode.AppendChild(oNew);
      _oDoc.Save(_sConfig);
      return getXmlNode(oNode,sName,sKey);
    }
    private XmlNodeList createXmlNodeList(XmlNode oNode, string sName, string[] sKeys) 
    {
      XmlElement oNew=_oDoc.CreateElement(sName);
      oNode.AppendChild(oNew);
      foreach(string sKey in sKeys) 
      {
        createXmlNode(oNew,sName+LISTPOSTFIX,sKey);
      }
      _oDoc.Save(_sConfig);
      return getXmlNodeList(oNode,sName+LISTPOSTFIX);
    }
    //get
    private XmlNode getXmlNode(string sName, string sKey) 
    {
      return getXmlNode(_oDoc.SelectSingleNode("//"+ROOT),sName,sKey);
    }
    private XmlNode getXmlNode(XmlNode oNode, string sName, string sKey) 
    {
      return oNode.SelectSingleNode(sName+"[@key=\""+sKey+"\"]");
    }
    private XmlNode getXmlNode(XmlNode oNode, string sName) 
    {
      return oNode.SelectSingleNode(sName);
    }
    private XmlNodeList getXmlNodeList(XmlNode oNode, string sName) 
    {
      return oNode.SelectNodes(sName);
    }
    //set
    private XmlNode setXmlParam(XmlNode oNode, string sParam, string sVal) 
    {
      //check it param exisits
      XmlNode oParam=getXmlNode(oNode,sParam);
      if(oParam!=null) 
      {
        //remove param
        oNode.RemoveChild(oParam);
      }
      //set param
      return createXmlNode(oNode,sParam,sVal);
    }
    private XmlNodeList setXmlParams(XmlNode oNode, string sParam, string[] sVals) 
    {
      //check it param exisits
      XmlNode oParam=getXmlNode(oNode,sParam);
      if(oParam!=null) 
      {
        //check if it has children
        XmlNodeList oKids=getXmlNodeList(oParam,sParam+LISTPOSTFIX);
        foreach(XmlNode oKid in oKids) 
        {
          //remove param
          oParam.RemoveChild(oKid);
        }
        //remove param
        oNode.RemoveChild(oParam);
      }
      //set param
      return createXmlNodeList(oNode,sParam,sVals);
    }
  }
}